SARS-CoV-2(221) COVID-19(140) antibody(87) Vaccine(76) neutralization(74) variant(68) Mutation(61) the SARS-CoV-2(51) variants(48) omicron(47) coronavirus(45) Spike protein(44) Infection(41) SARS-COV-2 infection(41) virus(39) individual(39) Neutralizing antibodies(38) spike(38) RBD(36) pandemic(36) viruses(35) Efficacy(34) Neutralizing(33) serum(31) Receptor-binding domain(31) Evolution(30) Viral(30) dose(30) neutralizing antibody(29) variants of concern(29)